Learn about character type checking and filter_var. I bumped into these while reading Writing better Regular Expressions in PHP.
Tag Archives: check
Stop checking for NULL pointers!
Read this great article Stop checking for NULL pointers! It mentions that there are many other invalid pointers than NULL, which is the same idea I had recently with regard to foreign keys in databases.
SQLite integrity check
To process an integrity check on an SQLite database:
$ sqlite3 database.sqlite 'pragma integrity_check'
Checking your Ubuntu version
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Read about checking your Ubuntu version today and was reminded of lsb_release -a.